William h



@uiten tant. @anni @fitta IMPEOYBD PADDLE-WHEEL.

alge Stimuli aferra tu im than tetta atmt ma mating mi si tige am.

TO' ALL PERSONS TO WHOM THESE PRESENTS SHALL COME: i

Be it known that I, WILLIAMH. HOLLAND, of Chelsea, in the county ofSuifolk, and State of Massachu setts, have invented a new and usefulImprovement in Paddle-Wheels for navigable vessels; vand I do herebydeclare the same to be fully described in the following specification,and represented in the accompanying drawings, of which- Figure 1 is atopview.

Figure 2, a side elevation.

Figure 3, a longitudinal section; and I Figure 4, a transverse sectionof a sectional part of a paddle-wheel, made in-accordance with myinvention, the same exhibiting about one-eighth of the wheel, theremainder of it being similarly, constructed.

This wheel is intended to be made of plate metal and metallic rods, (butmay be constructed of wood, if desirable,) and in some respects isanalogous'to the wheel represented in Letters Patent numbered fifty-livethousand seven hundred and seventy, and granted to me; that is to say',it has two auxiliary floats, D D, combined with each of its main floats,C. Neither of the auxiliary iloats, D, extend from the vertex of itsmain oat, but projects from the main oat at apointwhich is about midwaybetween its vertex and the next adjacent end of themain loat.` Each mainloat,C, consists of a plate of metal `bent at its middle to an-obtuseangle, and their main floats are arranged in pairs, those of each pair,as well as their auxiliary iioats, D D D D, being madeto stand inopposite directions, as representedl in the drawings; furthermore, thereis a space, a, between the vertex of each'float and that of the nextfloat of the next contiguous pair. Each main float at its vertex liesagainst and is connected toone of a series of rods or arms, b, extendedradially from a hub, E, fixed in a tubular or solid shaft, F. The saidloat is also connected at each of its ends toone of another set ofradial arms or rods, c, there being two series of these latter arms,those of each series being projected from one of twoother hubs, G Gr,arranged on the shaft, F, and with the first-mentioned hub between themin manner as represented in the drawings. Each outer set of radial armsis to be strengthened by being connected to a se'ries of concentricrings, d ef, which are also provided with two shorter or auxiliaryradial arms, g g, arranged between each pair of the arms, 'c c, andconnected to the rings; .to each of these auxiliary arms one end of oneof the adxiliary floats, D, is fastened, the auxiliary arm serving as asupport for the said float. My wheel, though in some respects similar tothe paddle-wheel represented in the United States Patent numbered fiftythousand four hundred and seventeen, is very different therefrom inthisflatter the floats or paddles of each pair are connected at theirmiddles, whereas the main paddles of my wheel `are entirely disconnectedat their middles, and the arrangement of them is such as to form spacesbetween the vertices of every two of them, as set forth.

` I do not herein claim the combination -'and arrangement oftwo-auxiliary paddles, D D, with each of the main paddles or iioats, CC; nor do I claim the wheel as exhibited in the patent hereinbefore lastmentioned. I claim my improved paddle-wheel or propeller, asconstructed, with its man and auxiliary floats C D, three series ofradial rods and arms, and two series of radial auxiliary radial arms,arranged and combined together, and with rings and hubs, substantiallyas hereinbefore described.

WM. H. HOLLAND.

Witnesses:

R. H. EDDY, F. P. HALE, Jr.

